Win32 program compiles but no window appears - c++

Question

i am compiling a simple Win32 api program but the problem is that it compiles fine but no window appears. I checked the process in taskmanager and the program is there but doesn't show up a window. I am using CodeBlocks IDE 10.05 with GNU GCC compiler under windows 7 32-bit.
I know there is a similar question here on stackoverflow but the solution given there was a'==' instead of '='. here is the code:
#include <windows.h>
#include <tchar.h>
/* Global Vars */
HINSTANCE hInst;
HWND wndHandle;
int winWidth = 640;
int winHeight = 480;
//func prototypes
bool InitWindow(HINSTANCE hInst, int width, int height);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
/********************************************************
* WINMAIN FUNCTION
*********************************************************/
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
hInst = hInstance;
//app window
if (!InitWindow(hInst, winWidth, winHeight))
{
return false;
}
// MESSAGE LOOP
MSG msg = {0};
while (WM_QUIT != msg.message)
{
//window messages
while(PeekMessage(&msg, NULL,0,0, PM_REMOVE) == TRUE)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
//additional logic
}
return (int)msg.wParam;
}
/*******************************************************************
* InitWindow
* Inits and creates and main app window
* Inputs - application instance - HINSTANCE
Window width - int
Window height - int
* Outputs - true if successful, false if failed - bool
*******************************************************************/
bool InitWindow(HINSTANCE hInstance, int width, int height)
{
// Register class
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = 0;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH) + (COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = TEXT("DirectX 10 Example");
wcex.hIconSm = 0;
if(!RegisterClassEx(&wcex))
{
return false;
}
// resize window
RECT rect = { 0, 0, width, height };
AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, false);
// create the window from the class above
wndHandle = CreateWindow( TEXT("DX 10 Example"),
TEXT("DX10 WINDOW"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
rect.right - rect.left,
rect.bottom - rect.top,
0,
0,
hInstance,
0);
if(wndHandle == 0)
{
return false;
}
ShowWindow(wndHandle, SW_SHOW);
UpdateWindow(wndHandle);
return true;
}
/*******************************************************************
* WndProc
* The main window procedure for the application
* Inputs - application window handle - HWND
message sent to the window - UINT
wParam of the message being sent - WPARAM
lParam of the message being sent - LPARAM
* Outputs - LRESULT
*******************************************************************/
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
// Allow the user to press the escape key to end the application
case WM_KEYDOWN:
switch(wParam)
{
// Check if the user hit the escape key
case VK_ESCAPE:
PostQuitMessage(0);
break;
}
break;
// The user hit the close button, close the application
case WM_DESTROY:
PostQuitMessage(0);
break;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}

Answer 1

you have
wcex.lpszClassName = TEXT("DirectX 10 Example");
and
wndHandle = CreateWindow( TEXT("DX 10 Example"),
TEXT("DX10 WINDOW"),

Answer 2

Your have to use the same class name for "CreateWindow" as you used for "RegisterClass".
In your source code those two differ:
wcex.lpszClassName = TEXT("DirectX 10 Example");
...
wndHandle = CreateWindow(TEXT("DX 10 Example"), ...